thanks a lot! I've been staring at them all night. One of my cories has red on its gills. It seems perfectly fine. If it's acting fine should I leave it alone or take it back to the fishstore? I just don't want anything to happen to it. The rest are A-OK I tried to take a picture of it but it never comes out well. Any clue on what I should do?
on second inspection I think they are all like that. When you look at it from a different angle, they are all red and sometimes you can see "through" the fish.